ImportError的错误消息：没有名为“ mnist”的模块

Question

我在这里遵循TFGAN教程

# Make TFGAN models and TF-Slim models discoverable.
import sys
import os
# This is needed since the notebook is stored in the `tensorflow/models/gan` folder.
sys.path.append('..')
sys.path.append(os.path.join('..', 'slim'))
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function

%matplotlib inline
import matplotlib.pyplot as plt
import numpy as np
import time
import functools
from six.moves import xrange  # pylint: disable=redefined-builtin

import tensorflow as tf

# Main TFGAN library.
tfgan = tf.contrib.gan

# TFGAN MNIST examples from `tensorflow/models`.
from mnist import data_provider
from mnist import util

但是，from mnist import data_provider会导致错误消息，例如

ImportError: No module named 'mnist'

这可能是什么原因，在我看来tensorflow已正确安装并导入。